Home / 20,913.97-28,861.33-11,483.14

Finding the Fourth Proportional to 20,913.97, 28,861.33 and 11,483.14

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Solution

The fourth proportional to 20,913.97, 28,861.33 and 11,483.14 is: 15,846.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.97 : 28,861.33 = 11,483.14 : x
  2. Step 2: Convert to fraction form
    20,913.97/28,861.33 = 11,483.14/x
  3. Step 3: Cross multiply
    20,913.97x = 28,861.33 × 11,483.14
  4. Step 4: Simplify right side
    20,913.97x = 331,418,592.12
  5. Step 5: Solve for x
    x = 331,418,592.12/20,913.97
  6. Step 6: Final answer
    x = 15,846.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.